float; on the surface; unstable
【化】 flotation
beginning or end; cobbra; conk; crumpet; end; first; garret; hair; head
leading; nob; noddle; pate; sconce; side; top; twopenny
【医】 capita; caput; cephal-; cephalo-; head; kephal-; kephalo-
ceremony; formula; model; pattern; ritual; style; type
【化】 expression
【医】 F.; feature; formula; Ty.; type
【化】 shell-and-tube heat exchanger